San Joaquin River - San Joaquin Harbor Weather Forecast

    • 58
    • 72

    Mostly Sunny

    • 58
    • 70

    Mostly Sunny

    • 55
    • 67

    Mostly Sunny

    • 56
    • 70

    Mostly Sunny

    • 55
    • 63

    Rain Likely

    • 55
    • 61

    Rain Likely

Today 9 Oct East Bay Interior Valleys

Sunny. A slight chance of drizzle in the morning. Highs in the upper 70s. South Winds around 5 Mph. Becoming west in the afternoon.

Tonight 9 Oct East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph in the evening. Becoming light.

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San Joaquin River - San Joaquin Harbor Temperature Statistics

October Temperature

Concord, Buchanan Field (15.5 miles)

  • Lowest 5 October, 2025

    53.1 °F

  • Average October

    67.5 °F

  • Highest 7 October, 2025

    90 °F

Climate (2020–Present)

Concord, Buchanan Field (15.5 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    74.5 °F
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